Index device



Patented June 24, 1930 narran arras 'e JAMES n. nenn, or nearsTonaWANn-s, NEW Yeux, Assistme lfre iaiixarrnerion.`

RAND INC., GIE' NEW YORK, 1\l`. Y.,

A GGRPRAT'IOIT 0F DELAWARE INDEX nnvron Application led June 11,

index systems and consists primarily in se.

curing a cover or sheath of transparent sheet material to a card in s oha manner that the sheath may expand or contract without buchling thecard. This and other features will be hereinafter more fully describedand pointed out in the appended'claims, and one embodiment of theinvention is illustrated in the accompanying drawings, in which i Fig. 1is a front view of aV holder and sheath; i

Fig. 2 is a rea-r view; and

Fig. 3 is an enlarged section on the line 3-'3 of Fig. 2. Y

The sheath which encloses one margin of the index card holder isordinarilyl made of transparent sheet Celluloid which heretofore hasbeen secured to holders or index cards'at several points bystaples orother means so that accidental separation of the cards or holders fromthe sheath incidental to their manipulation is prevented. The vsheathhowever contracts and expands in response to changes in ytemperature andhumidity and las a result the card 'or holder to which it is fthe frontwall being bentinwardly to form a lip 7. The strips 2 and 3 are fixed tothe sheathin such manner as to prevent a pivotal or turning movementtherebetween as inV constructions similar to that disclosed in thepatentto Rand No. 1,302,848 in which wire fasteners are employed. By`the term fixed e as above employedand as used in certain of the claimsthe applicant refers to a non-rotary or non-pivotal connection betweenthe strip and the sheath. The-front and rear wall of the sheath may beof the saine` width, as shown in Fig. This involvesa saving of materialover sheaths heretofore in usein which the rearwall was wider" than thefront 1924. semaine. 719,306. L

Wall to provide a portion to 'which staples y could be convenientlyattached.V TheVV sheet bodyl preferably though not necessarily extendstothe line connecting the lower ends of" strips 2, in which` case thestrips maybe formed merely by slitting the lower margin ofthe sheetasillustrated,"andthe margin 9V 'of the sheet extends into the pocketsheath.

yVhen the strips 2 and 3 lare formed by slitting the body sheet asaforesaid, they are preferably connected to thejoutside of the `from.that ofthe' central portion 9, whereby the` inner edges of thestripsdol not; engage the end edges ofcentral' portion 9l when theVsheat-h contracts. 1 j l Heretofore-staples have been employed tosecure a sheath to a sheet-but they have been found disadvantageousbecausethey catch in adjacent cardsand the holes provided for the.staples weaken the margins of thesheet so sheathe so that they lierin aplane dierent thatwh'en thesheets are of ordinary paper the staples arefrequently? torn vout ofthe holes. By fastening thesheath tothe card bymeansof the strips 2 and 3 the above dif-'floulties'are'overcome'becauseV the sheet is in no manner weakened bythe connection, although the dimensions of the sheath can vary Withoutbuckling the sheet 1.

As above pointed out the sheath 4 is con nected to thesheet 1 only atthe ends so that the intermediate portion of the sheath is uri--attached and pockets are thereby formed on bothsi'des of the sheet 1.Index'cards (notv shown) may be inserted in the pockets formed betweenthe walls of the sheath' and thev sheet 1 on both sides of the sheetand'bear suitable' indicia accordingto the Subj ect matter ofthe index.Thek index card on one side may be held to the sheet 1 byinserting.y

the upper corners thereof into slits- 8 adja-v cent the top'of thesheet.

I claim: y 1. A holder for index slips comprising a sheetbody vandpocket sheath attached together by a narrow strip at'each enolV of thesheath, said Vstrips being integral l,withsaid body, and the ends'of thestrips attached to .the sheath being free to move relative tothe sheetbody in a direction longitudinal to theI ;V`

sheath to allow for expansion or contraction of the sheath.

2. A holder for index slips comprising a sheet having a sheath oftransparent sheet Celluloid enclosing one margin thereof, said sheathhaving front and rear Walls united alongy one longitudinal edge, Stripson said sheet formed by Cutting slits adjacent op-vr posed edges adaptedto be secured to the outer side of the rear Wall of the sheath to enablethe Celluloid to expand or contract Without buckling the sheet, theintermediate p0r-` tion of the sheath being unattached toy pro# videpockets on both sides of the sheet to receive index slips. s i f3'. Aholder forpindexslips comprising --a sheet body and a folde'dfsheathfitting over one margin of the-body,l the body being slitat eachV end to Jform V,integral stripsyand said ,strips being-securedto thebutSide/O the sheath. Y A f 4. A holder for indexslips;comprising-a card,'a sheath engaging one'margin of the card,andjstri'psfat opposite ends of the card ,125 extending laterallytothesheath, each st-ri'p having a corresponding end permanentlyfixed'to the card and the opposite end secured to the sheathinvoff'setrelationto the card,

saidnstrips compensating' for differences in ,.130 expansion between thesheath and card.

5. A holder for index slips, comprisinga card,- a sheath engaging onemargin-of the heard, 'and strips arranged in spaced relation, eachhaving one end permanently lixe'd to the card andthe oppositeendpermanently fixed to the'sheath, said strips being provided tocompensate' 'for dierences in expansion and contraction between thesheath and card.

Signed by'fmef 'at BostonfMassachusetts, gio this sixteenth dayolMaylQQLV l JAMES H. RAND.

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